Enum Expression 

pub enum Expression {
    Undefined,
    Null,
    Integer(i64),
    UnsignedInteger(u64),
    Float(OrderedFloat<f64>),
    Boolean(bool),
    Text(ByteString),
    Blob(Bytes),
    List(Vec<Expression>),
    Map(BTreeMap<Expression, Expression>),
    Custom(ByteString, Box<Expression>),
    Call(Call),
}

Expression.

Variants

Undefined

Undefined.

Null

Null.

Integer(i64)

Integer.

UnsignedInteger(u64)

Unsigned integer.

Float(OrderedFloat<f64>)

Float.

Boolean(bool)

Boolean.

Text(ByteString)

Text.

Blob(Bytes)

Blob.

List(Vec<Expression>)

List.

Map(BTreeMap<Expression, Expression>)

Map.

Custom(ByteString, Box<Expression>)

Custom.

Call(Call)

Call.

Implementations

impl Expression

pub fn evaluate<StoreT, ErrorRecipientT>( &self, call_site: &CallSite, library: &mut Library<StoreT>, errors: &mut ErrorRecipientT, ) -> Result<Option<Expression>, FloriaError>

where StoreT: Clone + Send + Store, ErrorRecipientT: ErrorRecipient<FloriaError>,

Available on crate feature plugins only.

Evaluate the expression.

Eager calls will be dispatched here.

impl Expression

pub fn is_literal(&self) -> bool

True if has no non-lazy calls.

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Expression

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Expression

fn default() -> Expression

Returns the “default value” for a type.

impl Depict for Expression

fn depict<WriteT>( &self, writer: &mut WriteT, context: &DepictionContext<'_>, ) -> Result<()>

where WriteT: Write,

Write a depiction suitable for terminals.

fn write_depiction<WriteT>( &self, writer: &mut WriteT, context: &DepictionContext<'_>, ) -> Result<(), Error>

where WriteT: Write,

Write the depiction with a final newline.

fn write_default_depiction<WriteT>( &self, writer: &mut WriteT, ) -> Result<(), Error>

where WriteT: Write,

Write the depiction with a final newline.

fn write_plain_depiction<WriteT>( &self, writer: &mut WriteT, ) -> Result<(), Error>

where WriteT: Write,

Write the depiction with a final newline.

fn print_depiction(&self, context: &DepictionContext<'_>)

Print the depiction to anstream::stdout with a final newline.

fn print_default_depiction(&self)

Print the depiction to anstream::stdout with a final newline.

fn print_plain_depiction(&self)

Print the depiction to anstream::stdout with a final newline.

fn eprint_depiction(&self, context: &DepictionContext<'_>)

Print the depiction to anstream::stderr with a final newline.

fn eprint_default_depiction(&self)

Print the depiction to anstream::stderr with a final newline.

fn eprint_plain_depiction(&self)

Print the depiction to anstream::stderr with a final newline.

fn to_depiction(&self, context: &DepictionContext<'_>) -> Result<String, Error>

Capture depict into a String.

fn to_default_depiction(&self) -> Result<String, Error>

Capture depict into a String.

fn to_plain_depiction(&self) -> Result<String, Error>

Capture depict into a String.

impl Display for Expression

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&'static [u8]> for Expression

fn from(value: &'static [u8]) -> Self

Converts to this type from the input type.

impl From<&'static str> for Expression

fn from(value: &'static str) -> Self

Converts to this type from the input type.

impl From<BTreeMap<Expression, Expression>> for Expression

fn from(value: BTreeMap<Expression, Expression>) -> Self

Converts to this type from the input type.

impl From<ByteString> for Expression

fn from(value: ByteString) -> Self

Converts to this type from the input type.

impl From<Bytes> for Expression

fn from(value: Bytes) -> Self

Converts to this type from the input type.

impl From<Call> for Expression

fn from(value: Call) -> Self

Converts to this type from the input type.

impl From<OrderedFloat<f64>> for Expression

fn from(value: OrderedFloat<f64>) -> Self

Converts to this type from the input type.

impl From<String> for Expression

fn from(value: String) -> Self

Converts to this type from the input type.

impl<AnnotatedT> From<Variant<AnnotatedT>> for Expression

fn from(variant: Variant<AnnotatedT>) -> Self

Converts to this type from the input type.

impl From<Vec<Expression>> for Expression

fn from(value: Vec<Expression>) -> Self

Converts to this type from the input type.

impl From<bool> for Expression

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Expression

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i64> for Expression

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<u64> for Expression

fn from(value: u64) -> Self

Converts to this type from the input type.

impl Hash for Expression

fn hash<HasherT>(&self, state: &mut HasherT)

where HasherT: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Into<Expression> for Class

fn into(self) -> Expression

Converts this type into the (usually inferred) input type.

impl Into<Expression> for VertexFinder

fn into(self) -> Expression

Converts this type into the (usually inferred) input type.

impl Into<Expression> for VertexSelector

fn into(self) -> Expression

Converts this type into the (usually inferred) input type.

impl<AnnotatedT> Into<Variant<AnnotatedT>> for Expression

where AnnotatedT: Default,

fn into(self) -> Variant<AnnotatedT>

Converts this type into the (usually inferred) input type.

impl Ord for Expression

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Expression

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Expression

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Expression